Golden State Warriors head coach Steve Kerr won championships both as a player and a coach. If there's anyone you want to ask about winning basketball, he'll be a reliable source person since he's been around some of the best players the game has ever seen.

While he has seen a lot of good basketball in his lifetime, he thinks that nothing can still beat the level of basketball his Warriors played against the Cleveland Cavaliers during the 2017 NBA Finals. The one that caught his attention, in particular, was Game 2 of that series.

As noted by Wes Goldberg of The Mercury News, Kerr claims that he hasn't seen basketball of that caliber since then.

“I think that was the highest level of basketball I’ve ever seen in my life. I just thought that was Cleveland’s best team of the four years that we faced them. I thought they were much better that year than they were the previous year when they beat us in seven. Obviously, we were a lot better as well, adding Kevin Durant to the mix and being fully healthy and motivated and ready to go. So the level of play was just astounding. Particularly at the offensive end,” Steve Kerr shared/

“You know, that was, to me, when everything sort of came to a head in terms of where the game had been heading from a spacing standpoint and a position-less standpoint. We got to a point in that series where LeBron was basically playing the five — playing up like a point center, and he’s the biggest guy on the floor for them. And they had four shooters around him, and he would just penetrate and they had such great spacing that you had to honor everybody, and he could just get right to the rim.

“So it was terrifying trying to defend them. It was terrifying for them to try to defend us too.”

That series was definitely one to remember. Both teams brought their best to the table, but the Warriors eventually won over LeBron James and the Cavaliers.

Aside from that, Kerr also called the Dubs'  2017 team as the best roster he has coached. Not only did that Warriors squad boast a championship experience, but they also added a top-3 player in Kevin Durant in the summer heading to that season.

Some may disagree with Kerr's opinion — especially since it follows a historic comeback by LeBron and the Cavs in the 2016 Finals — but it's hard to argue against a man who has played with Michael Jordan at Chicago.